Heir apparent and Heritor

Heir apparent noun - An heir whose right to an inheritance cannot be defeated if that person outlives the ancestor.

Heritor and heir apparent are semantically related. In some cases you can use "Heritor" instead a noun phrase "Heir apparent".

Heritor noun - A person who is entitled by law or by the terms of a will to inherit the estate of another.

Heir apparent and heritor are semantically related. Sometimes you can replace phrase "Heir apparent" with "Heritor", this terms are similar.